ON ABLATION AND PHASE-TRANSFORMATION PROPERTIES OF FIBER REINFORCED MATERIALS AT HIGH TEMPERATURE BY MICROMECHANICS
增强纤维材料高温烧蚀-相变特性的细观研究

The present paper, according to the analysis of the ablative mechanism of thermal protective fiber reinforced materials under elevated temperature, the ablation-phase transforma-tion properties and the thermomechanical behavior of the materials are investigated by Eshelby equivalent inclusion method. The interaction among different phases by thermal chemical reaction is considered from the hypothesis of the statistical uniform distribution for the pyrolysis phases (in the vacuum environment) and oxidization phases (in the air) in the materials. The elastic modulus of different fiber reinforced materials under different temperature and heating rates are predicted. The results are in good agreement with experimental data.